While telling customers "you're not holding your iPhone 4 properly" doesn't exactly seem the best way to endear yourself, with hundreds of thousands of handsets in the wild Apple look unlikely to do anything more constructive than tell us where to grip. One solution users have discovered is Apple's Bumper case, but Fusion of Ideas have an alternative if you're more interested in keeping your smartphone's clean, rubber-free lines. They've sent us some shots of their StealthArmor for iPhone 4 edge protection strips, which not only protect the stainless steel from scratches but have the neat side-effect of bypassing the antenna issue.
Update: We've now tested the strips, and things aren't as clear cut as Fusion of Ideas might suggest. More after the cut.